Furnace grate



June 5, 1928. Y

H. B. HOLT FURNACE GRATE Filed Aug. 9, 1927 INVENTOR Patented Junel 5,1928. i y

UNITED STATES PATENT CFFICIE'.

HARRIS B. HOLT, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO ROSEDALE FOUNDRY & MACHINE COMPANY, 0F PITTSBURGH, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

FURNACE GRATE.

Application ined August 9, 1927, serial No. 211,692.

My invention relates to furnace grates, this platform; and I have placedthe hopper particularly to grates for furnaces* Whose 6 through whichthe grate is mechanically fire boxes must be accessible through endstoked on .the farther side of platform doors and which must be broughtwithin the'left-hand` side ofthe platform as seen fi narrow spacelimits. The grate structure in the drawing, and on the side remote fromincludes an endless chain grate andit may the furnace Wall. i forinstance be applied in replacement of a Stated in other words, I haveformed by grate structure of simpler form which, and between platform 5and the upper face stoked manually through the door of the of grate 4' ahorizontal extension of hopper 6, l fire-box, has been built within aspace of within which. extension the infed fuel shaped small verticalextent. and bedded is advanced to pass through the The accompanying`drawing is a view in furnace wall and enter the fire box. j vertical andlongitudinal section through By my invention, new installations may` thefurnace of a steam boiler,.in which furbe made with economy of space,and old nace my invention is embodied. installations in which space islimited may The fire box l of this furnace opens to be newly equippedwith endless-chain grates. boiler flues 2. In the front wall ofthe fireI claim as my invention: Y y boi; a door v3 is placed, and this doormust 1. A furnace with a door in its front Wall,

be accessible, both for purposes of observaa platform external to the',lfurnace wall.v

2U tic-n, and, when need be,v for the charging o f from whichthe saiddoor is accessible, a. fuel fuel to the grate within. The fire .boX 1thopper arranged on the side of the platform may be understood is sosituated that a space remote from the furnace wall, and a grate of ofsay no more than' twelve to seventeen endless chain type whose upperhorizontal inches in vertical extent is available beneath reach iscontinued from beneath the hopper, for the arrangement of the grate.beneath the said platform, and through the an endless chain grate l isshown underfurnace wall to the chamber within. l lying the lire box.Manifestly suchr a grate 2. A furnace with a doorin its front wall, maybe brougl'it within the space limits a platform external to the furnaceWall, named, but the problem remains, how, leav from which the said dooris accessible, a 30 ing door 3 accessible, to malte provision for fuelAhopper arranged on the side of the platthe mechanical stolring of thegrateso situform remote from the furnace Wall, and a ated. y grate ofendless chain type whose upper This problem I have solved in the mannervhorizontal reach extends beneath said platshown. I have provided aplatform at the form and through the furnace wall to the r front of andexternally of the wall of the chamber within, said platform and .gratefurnace, a platform from which the furnace cooperating to formahorizontal extension i door 3 is accessible; I have. placed this ofsaid hopper.

platform, elev ed at an interval above In testimony whereof I havehereunto setV the ground level of the structure;,I have my hand. y 40prolonged the grate a beneath and beyond HARRIS B. HOLT.

